August 21, 2025
United States
- Alaska
- California
- Connecticut
- Delaware
- District of Columbia
- Georgia
- Idaho
- Kentucky
- Maine
- Maryland
- Massachusetts
- Michigan
- Montana
- New Hampshire
- New Jersey
- New York
- North Carolina
- Ohio
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- Tennessee
- Vermont
- Virginia
- Washington
- West Virginia
Canada
- British Columbia: the entire province
- Nova Scotia: the entire counties of Kings, Lunenburg, Digby, Queens, Shelburne, Yarmouth and Annapolis
- Ontario: the entire regional municipality of Niagara, county of Haldimand, the City of Hamilton and the township of Alnwick/Haldimand in the province of Ontario
For a map and complete description of the Hemlock woolly adelgid regulated area please refer to The Hemlock woolly adelgid Infested Places Order. Contact your local CFIA office for more information.